US20100199798A1 - Bicycle brake operating device - Google Patents
Bicycle brake operating device Download PDFInfo
- Publication number
- US20100199798A1 US20100199798A1 US12/668,663 US66866308A US2010199798A1 US 20100199798 A1 US20100199798 A1 US 20100199798A1 US 66866308 A US66866308 A US 66866308A US 2010199798 A1 US2010199798 A1 US 2010199798A1
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- United States
- Prior art keywords
- operation unit
- bicycle
- operating device
- axis
- recited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 210000003811 finger Anatomy 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 6
- 210000003813 thumb Anatomy 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 210000004247 hand Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/102—Disposition of hand control by means of a tilting lever
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
- B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
- B62K23/06—Levers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
- B62L3/02—Brake-actuating mechanisms; Arrangements thereof for control by a hand lever
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20012—Multiple controlled elements
- Y10T74/20018—Transmission control
- Y10T74/2003—Electrical actuator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20207—Multiple controlling elements for single controlled element
- Y10T74/20256—Steering and controls assemblies
- Y10T74/20268—Reciprocating control elements
- Y10T74/2028—Handle bar type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
- Y10T74/20438—Single rotatable lever [e.g., for bicycle brake or derailleur]
Definitions
- the present invention relates to a device for operating a bicycle brake.
- One of the conventional bicycle brake operating devices has a rim brake caliper, a disc brake caliper, or the like operated via a brake wire configured from an outer casing and an inner wire, as in the embodiments disclosed in Patent Documents 1 through 3.
- Another conventional device has a rim brake caliper, a disc brake caliper, or the like operated via a brake hose filled with a liquid, as in the embodiment disclosed in Patent Document 4.
- Another bicycle brake operating device is to detect the rotation of an operating unit capable of rotating around an axis that is both substantially perpendicular to an axis in the swinging center of a brake lever and substantially perpendicular to the longitudinal direction of the brake lever, and to enable outputting of an electric signal, as is disclosed in Patent Documents 5 and 6.
- Patent Document 6 discloses an embodiment in which operating units are installed on both a brake lever and a bracket.
- One of the conventional gear shifter operation devices for bicycles involves the gear shifter being operated via a shift hose filled with a liquid as in the embodiment disclosed in Patent Document 7, and another conventional device involves the gear shifter being operated via a shift hose filled with a gas as in the embodiment disclosed in Patent Document 8.
- One of the conventional electric gear shifters for bicycles involves an external gear shifter being controlled as in the embodiment disclosed in Patent Documents 9 and 10, and another conventional shifter involves an internal gear shifter being controlled as in Patent Document 11.
- Patent Documents 1 through 8 disclose signal output means for controlling a gear shifter, wherein the means in Patent Documents 1 through 4 is that the signal output be made by a wire; in Patent Documents 5 and 6, by electricity; in Patent Document 7, by a liquid; and in Patent Document 8, by a gas.
- a bicycle brake operating device comprising an operating unit capable of detecting rotation by detection means, wherein the operating unit does not readily hinder the braking operation, the operating unit is not readily damaged when the bicycle falls over, the feel and efficiency of the operation do not readily change despite differences in the operating position or the size of the hands of the rider, and the operation unit is easily designed to be dustproof and waterproof.
- front refers to a bicycle traveling stably and straight over a horizontal surface.
- forward refers to the direction in which the bicycle travels forward.
- FIG. 1 or 4 of the peripheral vicinity of a typical bicycle handlebar.
- a center part 16 is clamped onto a front end part 17 of a handlebar post 18 , one end 14 curves to the rear, and a band 8 of a bracket 2 is wound around the curved portion, fixing the bracket 2 to face forward.
- the other end of the handlebar 1 has a mirror image correlation with the one end 14 , and is therefore not described in FIGS. 1 through 6 .
- the handlebar post 18 is connected to a steering tube, and the steering tube is inserted through a head tube 20 of the bicycle frame and supported by a bearing 19 to be capable of rotating relative to the head tube 20 .
- the bicycle brake operating device is, as shown collectively in FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, a bicycle brake operating device comprising:
- bracket 2 capable of being fixed to a handlebar 1 of a bicycle
- a brake lever 4 supported on the bracket 2 so as to be capable of swinging around an axis 3 of the bracket 2 ;
- the bicycle brake operating device is, as shown collectively in FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, a bicycle brake operating device comprising:
- bracket 2 capable of being fixed to a handlebar 1 of a bicycle
- a brake lever 4 supported on the bracket 2 so as to be capable of swinging around an axis 3 disposed on the bracket 2 ;
- detection means 7 capable of detecting the rotation of the operation unit 6 centered around the axis 5 .
- the bicycle brake operating device is, as shown collectively in FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, a bicycle brake operating device comprising:
- bracket 2 capable of being fixed to a handlebar 1 of a bicycle
- a brake lever 4 supported on the bracket 2 so as to be capable of swinging around an axis 3 disposed on the bracket 2 ;
- an operation unit 6 supported so as to be capable of rotating around an axis 5 extending in the longitudinal direction of the brake lever 4 ;
- the axis 5 is between the brake lever 4 and the handlebar 1 when the bracket 2 has been fixed to the handlebar 1 and the brake lever 4 is in a standby mode preceding operation.
- the bicycle brake operating device is, as shown collectively in FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, a bicycle brake operating device comprising:
- bracket 2 capable of being fixed to a handlebar 1 of a bicycle
- a brake lever 4 supported on the bracket 2 so as to be capable of swinging around an axis 3 of the bracket 2 ;
- the axis 5 is between the brake lever 4 and the handlebar 1 when the bracket 2 has been fixed to the handlebar 1 and the brake lever 4 is in a standby mode preceding operation.
- the bicycle brake operating device is the bicycle brake operating device according to any of the first through fourth aspects, as shown collectively in
- FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, wherein
- the longitudinal direction of the operation unit 6 extends in the longitudinal direction of the brake lever 4 .
- the bicycle brake operating device is the bicycle brake operating device according to any of the first through fourth aspects, as shown collectively in FIGS. 1 through 3 or collectively in FIGS. 4 through 6 , for example, wherein
- the longitudinal direction of the operating unit 6 extends along the axis 5 .
- the bicycle brake operating device is the bicycle brake operating device according to any of the first through fourth aspects, wherein
- the operation unit 6 is used to operate a gear shifter of the bicycle.
- the bicycle brake operating device is the bicycle brake operating device according to any of the first through fourth aspects, wherein
- the operation unit 6 is used to operate a gear shifter of the bicycle.
- the gear shifter of the bicycle uses a voltage source, an air pressure source, or the like as a power source.
- the operation unit 6 since the amount by which the operation unit 6 protrudes from the brake lever 4 is small, a sufficient swinging range can be ensured for the brake lever 4 without readily hindering the braking operation, and the operation unit 6 is not readily damaged when the bicycle falls over. Furthermore, since the operation unit 6 undergoes rotational movement centered around the axis 5 , the feel of the operation is stabilized because the force required for the operation is small and readily stabilized in comparison to an operation unit that undergoes linear movement, and a seal centered around the axis 5 is readily provided in cases in which dustproofing or waterproofing is required.
- the operation unit 6 can be supported by a comparatively simple structure.
- the operation unit 6 is even less readily damaged because the operation unit 6 is protected by the brake lever 4 and the handlebar 1 .
- the fifth or sixth aspect in addition to the effects of the present invention, it is possible to adapt more easily to differences in the operating position or the size of the hands of the rider even if a plurality of operating units is not disposed, and a stable feeling of operation is obtained at various operation positions because the distance from the axis 5 is comparatively stable when operating any portion of the operation unit 6 , in comparison with a conventional operation unit made to extend far in a direction substantially perpendicular to the swinging center axis.
- the eighth aspect in addition to the effects of the present invention, it is easy to minimize the length of the operation unit 6 in a direction perpendicular to the axis 5 because only a comparatively small amount of energy is needed to operate the operation unit 6 .
- FIG. 1 is a broken-out cross-sectional view of the bracket 2 , depicting Embodiment 1 as seen from the left side of the fixed handlebar 1 ;
- FIG. 2 is a view of Embodiment 1 as seen from the left side;
- FIG. 3 is a broken-out cross-sectional view of the bracket 2 , depicting Embodiment 1 as seen from the right side;
- FIG. 4 is a broken-out cross-sectional view of the bracket 2 , depicting Embodiment 2 as seen from the left side of the fixed handlebar 1 ;
- FIG. 5 is a view of Embodiment 2 as seen from the left side.
- FIG. 6 is a broken-out cross-sectional view of the bracket 2 , depicting Embodiment 2 as seen from the right side.
- the bicycle brake operating device of Embodiment 1 described below can be converted to a wire model as in Embodiment 2, and the bicycle brake operating device of Embodiment 2 can be converted to a hydraulic model as in Embodiment 1.
- the operation unit 6 is rotatable around the axis 5 , and its rotatable range is limited.
- one or more rotations of the operation unit 6 become possible by reducing the size of the fin shapes 25 to 27 , thereby enabling the operation unit 6 to detect the rotation by a rotary encoder and to output an electric signal.
- a so-called pivotless structure may be used in which, e.g., the operation unit 6 and the brake lever 4 are integrally molded using a fiber-reinforced resin, only the portion through which the axis 5 passes is molded thinly, and the operation unit 6 is capable of rotating only at a slight angle.
- electric signals can be outputted for both upshifting and downshifting, but, e.g., the operation unit 34 of Embodiment 2 may be omitted.
- possibilities include, but are not limited to, determining that upshifting or downshifting has occurred by a single click or double click of the operation unit 6 , and providing another operation unit on, e.g., the left side surface 23 of the bracket 2 .
- Embodiment 1 or 2 described below instead of a switch that directly moves the point of contact, various conventional detection means can be used, including, but not limited to, a lead switch and magnet, a phototransistor or other optical sensor and slit, or a Hall element or other magnetic sensor and magnet.
- the signals may be outputted by wireless means.
- the bracket 2 may be equipped with a control board, antenna, and battery for outputting carrier waves modulated by electric signals from the detection means 7 , for example.
- the headlight, blinker, horn, speedometer, or the like may be controlled.
- the bracket 2 may be fixed to the handlebar 1 by integrally molding the handlebar 1 and the bracket 2 from a carbon sheet or the like, for example.
- Embodiment 1 described below instead of the operation unit 6 being supported on the brake lever 4 , a possible configuration is one in which the operation unit 6 is supported on a member supported on the bracket 2 so as to be capable of swinging around an axis substantially parallel to the axis 3 , and the operation unit 6 is supported on the bracket 2 so as to be capable of substantially rotating around the axis 5 .
- the configuration and arrangements are preferably designed so that the operation unit 6 follows the swinging operation of the brake lever 4 , as in the embodiment of Patent Document 3.
- Embodiment 1 or 2 described below extending the fin shape 27 or 38 to the vicinity of the axis 3 makes it possible to easily operate the operation unit 6 or 34 with the thumb, index finger, or another finger even in an operating position where the front end vicinity of the bracket 2 is grasped.
- the brake lever 4 has a rod shape extending downward, one end of which is supported on a shaft pin centered around an axis 3 disposed in the front end of a hollow rod-shaped bracket 2 .
- the other end of the brake lever 4 in standby mode is swung backward, thereby causing one end of a push rod 10 to push on the internal cylinder of a hydraulic cylinder 11 , the other end of the push rod 10 being connected to a shaft pin centered around an axis 9 parallel to the axis 3 and disposed in the center of the brake lever 4 .
- the internal pressure increases in a brake hose, which is a linking member 12 connected at one end to the hydraulic cylinder 11 , and a hydraulic brake caliper connected to the other end of the linking member 12 begins a braking action.
- Typical operation positions include a position wherein the bases of the thumb and index finger of the right hand, the middle of the thumb, and the middle of the index finger come in contact with the top surface 15 , the left side surface 23 , and the right side surface 32 of the bracket 2 , respectively; and a position where the one end 14 of the handlebar 1 is grasped by the right hand. In either operation position, the front surface 24 of the brake lever 4 can be hooked by the index finger.
- the rod-shaped operation unit 6 extends along the back surface of the brake lever 4 and is capable of rotating around the axis 5 disposed so as to form an angle of 30 degrees or less with the longitudinal direction of the brake lever 4 (if the angle formed is 30 degrees or less, the axis 5 can be said to extend sufficiently along the longitudinal direction of the brake lever 4 ).
- the rod-shaped operation unit 6 comprises a shaft shape 29 centered around the axis 5 at one end, a cylindrical shape centered around the axis 5 at the other end, and fin shapes 25 to 27 extending along the axis 5 to the rear, front, and left of the axis 5 , respectively.
- the cylinder shape 30 at the other end is non-rotatably connected to an input shaft of the detection means 7 placed in the middle of the brake lever 4 , and is thus rotatably supported on the brake lever 4 .
- the shaft shape 29 is rotatably supported on a support part 28 at the other end of the brake lever 4 .
- the detection means 7 is a switch comprising an urging member for returning the input shaft centered around the axis 5 to a neutral position; and a mechanism which causes first and second terminals to close by rotating them about 5 degrees in a forward direction from the neutral position, and which causes second and third terminals to close by rotating them about 5 degrees in a reverse direction.
- the first, second, and third terminals are electrically connected to three cores of the signal wire 13 , and are electrically connected by the signal wire 13 to a gearshift control board installed on the bicycle frame.
- the gearshift control board monitors which of the first and third terminals the second terminal closes with, and controls an actuator for the gear shifting action so that if one terminal closes, the gear shifts up, and if the other terminal closes, the gear shifts down.
- the operation unit 6 can only rotate about 10 degrees in the forward and reverse directions from the neutral position because the fin shapes 26 and 27 both come in contact with the brake lever 4 .
- a bicycle brake operating device being a mirror image of the first device, is fixed to the other end of the handlebar 1 and can be operated by the left hand.
- the brake lever 4 has a rod shape extending downward, the middle of which is supported on a shaft pin centered around an axis 3 disposed in the front end of a hollow rod-shaped bracket 2 .
- the other end of the brake lever 4 in standby mode is swung backward, thereby causing an inner wire 35 to be pulled out from an outer casing.
- One end of the inner wire 35 is connected to a shaft pin centered around an axis 9 parallel to the axis 3 and disposed in the center of the brake lever 4 .
- the outer casing is a linking member 12 interlocked at one end with the bracket 2 .
- a wired brake caliper to which the other end of the linking member 12 is interlocked and the other end of the inner wire 35 is connected, begins a braking action.
- Typical operation positions include a position wherein the bases of the thumb and index finger of the right hand, the middle of the thumb, and the middle of the index finger come in contact with the top surface 15 , the left side surface 23 , and the right side surface 32 of the bracket 2 , respectively; and a position where the one end 14 of the handlebar 1 is grasped by the right hand. In either operation position, the front surface 24 of the brake lever 4 can be hooked by the index finger.
- the rod-shaped operation unit 6 extends along the back surface of the brake lever 4 and is capable of rotating around the axis 5 disposed so as to form an angle of 30 degrees or less with the longitudinal direction of the brake lever 4 .
- the rod-shaped operational unit 6 comprises a shaft shape 29 centered around the axis 5 at one end, a cylindrical shape 30 centered around the axis 5 at the other end, and a fin shape 25 located behind the axis 5 so as to extend along the axis 5 .
- the cylinder shape 30 is non-rotatably connected to an input shaft of the detection means 7 placed in the middle of the brake lever 4 , and is thus rotatably supported on the brake lever 4 .
- the shaft shape 29 is rotatably supported on a support part 28 at the other end of the brake lever 4 .
- a rod-shaped operation unit 34 extends along the back surface of the brake lever 4 and is capable of rotating around an axis 33 disposed behind the axis 5 so as to form an angle of 30 degrees or less with the longitudinal direction of the brake lever 4 .
- the rod-shaped operation unit 34 comprises a shaft shape 36 centered around an axis 33 at one end, a cylindrical shape 40 centered around the axis 33 at the other end, and fin shapes 37 and 38 located to the rear and left of the axis 33 , respectively.
- the cylindrical shape 40 at the other end is non-rotatably connected to an input shaft of detection means 39 placed in the middle of the brake lever 4 , and is thus rotatably supported on the brake lever 4 .
- the shaft shape 36 is rotatably supported on the support part 28 at the other end of the brake lever 4 .
- the detection means 7 is a switch comprising an urging member for returning the input shaft centered around the axis 5 to an initial position, and a mechanism whereby a rotation of approximately 5 degrees from the initial position causes first and second terminals to close.
- the detection means 39 is a switch comprising an urging member for returning the input shaft centered around the axis 33 to a neutral position; and a mechanism whereby a rotation of about 5 degrees in a forward direction from the neutral position causes third and fourth terminals to close, and a rotation of about 5 degrees in a reverse direction causes fourth and fifth terminals to close.
- the first and third terminals are electrically connected to each other, the second and fourth terminals are electrically connected to each other; and the third, fourth, and fifth terminals are electrically connected to three cores of the signal wire 13 , and these terminals are electrically connected by the signal wire 13 to a gearshift control board installed on the bicycle frame.
- the gearshift control board monitors which of the third and fifth terminals the fourth terminal closes with, and controls an actuator for the gear shifting action so that if one terminal closes, the gear shifts up, and if the other terminal closes, the gear shifts down.
- the operation unit 6 can only rotate about 10 degrees from the initial position because the fin shape 25 will come in contact with the operation unit 34 .
- the operation unit 34 can also only rotate about 10 degrees in the forward and backward directions from the neutral position because the fin shapes 37 and 38 will come in contact with the operation unit 6 and the brake lever 4 .
- a bicycle brake operating device being a mirror image of the first device, is fixed to the other end of the handlebar 1 and can be operated by the left hand.
Abstract
Description
- The present invention relates to a device for operating a bicycle brake.
- One of the conventional bicycle brake operating devices has a rim brake caliper, a disc brake caliper, or the like operated via a brake wire configured from an outer casing and an inner wire, as in the embodiments disclosed in Patent Documents 1 through 3.
- Another conventional device has a rim brake caliper, a disc brake caliper, or the like operated via a brake hose filled with a liquid, as in the embodiment disclosed in
Patent Document 4. - In the devices of Patent Documents 1 through 4, it is possible for a gear shifter to be operated via a shift wire configured from an outer casing and an inner wire.
- Patent Document 1: Japanese Laid-open Patent Application No. 05-286476
- Patent Document 2: Japanese Laid-open Patent Application No. 2005-153864
- Patent Document 3: Japanese Laid-open Patent Application No. 05-097088
- Patent Document 4: Japanese Laid-open Patent Application No. 2006-123898
- Another bicycle brake operating device is to detect the rotation of an operating unit capable of rotating around an axis that is both substantially perpendicular to an axis in the swinging center of a brake lever and substantially perpendicular to the longitudinal direction of the brake lever, and to enable outputting of an electric signal, as is disclosed in
Patent Documents -
Patent Document 6 discloses an embodiment in which operating units are installed on both a brake lever and a bracket. - Patent Document 5: Japanese Laid-open Patent Application No. 10-230888
- Patent Document 6: Japanese Laid-open Patent Application No. 2007-137412
- One of the conventional gear shifter operation devices for bicycles involves the gear shifter being operated via a shift hose filled with a liquid as in the embodiment disclosed in
Patent Document 7, and another conventional device involves the gear shifter being operated via a shift hose filled with a gas as in the embodiment disclosed inPatent Document 8. - Patent Document 7: Japanese Laid-open Patent Application No. 2003-048593
- Patent Document 8: Japanese Laid-open Patent Application No. 11-245873
- One of the conventional electric gear shifters for bicycles involves an external gear shifter being controlled as in the embodiment disclosed in
Patent Documents Patent Document 11. - Patent Document 9: Japanese Laid-open Patent Application No. 2006-137206
- Patent Document 10: Japanese Laid-open Patent Application No. 2006-007841
- Patent Document 11: Japanese Laid-open Patent Application No. 2003-040187
- Patent Documents 1 through 8 disclose signal output means for controlling a gear shifter, wherein the means in Patent Documents 1 through 4 is that the signal output be made by a wire; in
Patent Documents Patent Document 7, by a liquid; and inPatent Document 8, by a gas. - There is a demand for a bicycle brake operating device comprising an operating unit capable of detecting rotation by detection means, wherein the operating unit does not readily hinder the braking operation, the operating unit is not readily damaged when the bicycle falls over, the feel and efficiency of the operation do not readily change despite differences in the operating position or the size of the hands of the rider, and the operation unit is easily designed to be dustproof and waterproof.
- The following description uses drawings and the like pertaining to embodiments of the present invention, which are intended to make the details of the present invention easier to understand, and are not intended to limit the accompanying claims.
- The words “front,” “back,” “right,” “left,” and “down” used below refer to a bicycle traveling stably and straight over a horizontal surface. For example, the term “forward” refers to the direction in which the bicycle travels forward.
- First, a simple description is given, using
FIG. 1 or 4, of the peripheral vicinity of a typical bicycle handlebar. In a dropped handlebar 1, acenter part 16 is clamped onto afront end part 17 of ahandlebar post 18, oneend 14 curves to the rear, and aband 8 of abracket 2 is wound around the curved portion, fixing thebracket 2 to face forward. The other end of the handlebar 1 has a mirror image correlation with the oneend 14, and is therefore not described inFIGS. 1 through 6 . Thehandlebar post 18 is connected to a steering tube, and the steering tube is inserted through ahead tube 20 of the bicycle frame and supported by abearing 19 to be capable of rotating relative to thehead tube 20. - The bicycle brake operating device according to a first aspect is, as shown collectively in
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, a bicycle brake operating device comprising: - a
bracket 2 capable of being fixed to a handlebar 1 of a bicycle; - a
brake lever 4 supported on thebracket 2 so as to be capable of swinging around anaxis 3 of thebracket 2; - an
operation unit 6 supported on thebrake lever 4 so as to be capable of rotating around anaxis 5 extending in the longitudinal direction of thebrake lever 4; and detection means 7 capable of detecting the rotation of theoperation unit 6 centered around theaxis 5. - The bicycle brake operating device according to a second aspect is, as shown collectively in
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, a bicycle brake operating device comprising: - a
bracket 2 capable of being fixed to a handlebar 1 of a bicycle; - a
brake lever 4 supported on thebracket 2 so as to be capable of swinging around anaxis 3 disposed on thebracket 2; - an
operation unit 6 supported on thebrake lever 4 so as to be capable of rotating around anaxis 5 forming any angle within 30 degrees with respect to the longitudinal direction of thebrake lever 4; and - detection means 7 capable of detecting the rotation of the
operation unit 6 centered around theaxis 5. - The bicycle brake operating device according to a third aspect is, as shown collectively in
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, a bicycle brake operating device comprising: - a
bracket 2 capable of being fixed to a handlebar 1 of a bicycle; - a
brake lever 4 supported on thebracket 2 so as to be capable of swinging around anaxis 3 disposed on thebracket 2; - an
operation unit 6 supported so as to be capable of rotating around anaxis 5 extending in the longitudinal direction of thebrake lever 4; and - detection means 7 capable of detecting the rotation of the
operation unit 6 centered around theaxis 5; wherein - the
axis 5 is between thebrake lever 4 and the handlebar 1 when thebracket 2 has been fixed to the handlebar 1 and thebrake lever 4 is in a standby mode preceding operation. - The bicycle brake operating device according to a fourth aspect is, as shown collectively in
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, a bicycle brake operating device comprising: - a
bracket 2 capable of being fixed to a handlebar 1 of a bicycle; - a
brake lever 4 supported on thebracket 2 so as to be capable of swinging around anaxis 3 of thebracket 2; - an
operation unit 6 supported on thebrake lever 4 so as to be capable of rotating around anaxis 5 forming any angle within 30 degrees with respect to the longitudinal direction of thebrake lever 4; and - detection means 7 capable of detecting the rotation of the
operation unit 6 centered around theaxis 5; wherein - the
axis 5 is between thebrake lever 4 and the handlebar 1 when thebracket 2 has been fixed to the handlebar 1 and thebrake lever 4 is in a standby mode preceding operation. - The bicycle brake operating device according to a fifth aspect is the bicycle brake operating device according to any of the first through fourth aspects, as shown collectively in
-
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, wherein - the longitudinal direction of the
operation unit 6 extends in the longitudinal direction of thebrake lever 4. - The bicycle brake operating device according to a sixth aspect is the bicycle brake operating device according to any of the first through fourth aspects, as shown collectively in
FIGS. 1 through 3 or collectively inFIGS. 4 through 6 , for example, wherein - the longitudinal direction of the
operating unit 6 extends along theaxis 5. - The bicycle brake operating device according to a seventh aspect is the bicycle brake operating device according to any of the first through fourth aspects, wherein
- the
operation unit 6 is used to operate a gear shifter of the bicycle. - The bicycle brake operating device according to an eighth aspect is the bicycle brake operating device according to any of the first through fourth aspects, wherein
- the
operation unit 6 is used to operate a gear shifter of the bicycle; and - the gear shifter of the bicycle uses a voltage source, an air pressure source, or the like as a power source.
- In the present invention as described above, since the amount by which the
operation unit 6 protrudes from thebrake lever 4 is small, a sufficient swinging range can be ensured for thebrake lever 4 without readily hindering the braking operation, and theoperation unit 6 is not readily damaged when the bicycle falls over. Furthermore, since theoperation unit 6 undergoes rotational movement centered around theaxis 5, the feel of the operation is stabilized because the force required for the operation is small and readily stabilized in comparison to an operation unit that undergoes linear movement, and a seal centered around theaxis 5 is readily provided in cases in which dustproofing or waterproofing is required. - According to the first or second aspect, in addition to the effects of the present invention, the
operation unit 6 can be supported by a comparatively simple structure. - According to the third or fourth aspect, in addition to the effects of the present invention, the
operation unit 6 is even less readily damaged because theoperation unit 6 is protected by thebrake lever 4 and the handlebar 1. - According to the fifth or sixth aspect, in addition to the effects of the present invention, it is possible to adapt more easily to differences in the operating position or the size of the hands of the rider even if a plurality of operating units is not disposed, and a stable feeling of operation is obtained at various operation positions because the distance from the
axis 5 is comparatively stable when operating any portion of theoperation unit 6, in comparison with a conventional operation unit made to extend far in a direction substantially perpendicular to the swinging center axis. - According to the seventh or eighth aspect, in addition to the effects of the present invention, it is easy to collectively perform a series of operations of the bicycle, such as a deceleration braking operation and a downshifting operation, for example.
- According to the eighth aspect, in addition to the effects of the present invention, it is easy to minimize the length of the
operation unit 6 in a direction perpendicular to theaxis 5 because only a comparatively small amount of energy is needed to operate theoperation unit 6. -
FIG. 1 is a broken-out cross-sectional view of thebracket 2, depicting Embodiment 1 as seen from the left side of the fixed handlebar 1; -
FIG. 2 is a view of Embodiment 1 as seen from the left side; -
FIG. 3 is a broken-out cross-sectional view of thebracket 2, depicting Embodiment 1 as seen from the right side; -
FIG. 4 is a broken-out cross-sectional view of thebracket 2, depictingEmbodiment 2 as seen from the left side of the fixed handlebar 1; -
FIG. 5 is a view ofEmbodiment 2 as seen from the left side; and -
FIG. 6 is a broken-out cross-sectional view of thebracket 2, depictingEmbodiment 2 as seen from the right side. -
- 1 Handlebar
- 2 Bracket
- 3, 5, 9, 33 Axes
- 4 Brake lever
- 6, 34 Operation unit
- 7, 39 Detection means
- 8 Band
- 10 Push rod
- 11 Hydraulic cylinder
- 12 Linking member
- 13 Signal wire
- 14 One end
- 15 Top surface
- 16 Center part
- 17 Front end part
- 18 Handlebar post
- 19 Bearing
- 20 Head tube
- 21 Top tube
- 22 Down tube
- 23 Left side surface
- 24 Front surface
- 25, 26, 27, 37, 38 Fin shapes
- 28 Support part
- 29, 36 Shaft shapes
- 30, 40 Cylinder shapes
- 31 Bottom surface
- 32 Right side surface
- 35 Inner wire
- The bicycle brake operating device of Embodiment 1 described below can be converted to a wire model as in
Embodiment 2, and the bicycle brake operating device ofEmbodiment 2 can be converted to a hydraulic model as in Embodiment 1. - In
Embodiment 1 or 2 described below, theoperation unit 6 is rotatable around theaxis 5, and its rotatable range is limited. However, one or more rotations of theoperation unit 6 become possible by reducing the size of the fin shapes 25 to 27, thereby enabling theoperation unit 6 to detect the rotation by a rotary encoder and to output an electric signal. - In
Embodiment 1 or 2 described below, instead of rotation using ashaft shape 29, a so-called pivotless structure may be used in which, e.g., theoperation unit 6 and thebrake lever 4 are integrally molded using a fiber-reinforced resin, only the portion through which theaxis 5 passes is molded thinly, and theoperation unit 6 is capable of rotating only at a slight angle. - In
Embodiment 1 or 2 described below, electric signals can be outputted for both upshifting and downshifting, but, e.g., theoperation unit 34 ofEmbodiment 2 may be omitted. In this case, possibilities include, but are not limited to, determining that upshifting or downshifting has occurred by a single click or double click of theoperation unit 6, and providing another operation unit on, e.g., theleft side surface 23 of thebracket 2. - In
Embodiment 1 or 2 described below, instead of a switch that directly moves the point of contact, various conventional detection means can be used, including, but not limited to, a lead switch and magnet, a phototransistor or other optical sensor and slit, or a Hall element or other magnetic sensor and magnet. - In
Embodiment 1 or 2 described below, instead of a wired design that uses asignal wire 13, the signals may be outputted by wireless means. In this case, thebracket 2 may be equipped with a control board, antenna, and battery for outputting carrier waves modulated by electric signals from the detection means 7, for example. - In
Embodiment 1 or 2 described below, instead of the gear shifter of the bicycle being controlled, the headlight, blinker, horn, speedometer, or the like may be controlled. - In
Embodiment 1 or 2 described below, thebracket 2 may be fixed to the handlebar 1 by integrally molding the handlebar 1 and thebracket 2 from a carbon sheet or the like, for example. - In
Embodiment 1 or 2 described below, instead of the detection means 7 which is an electrical switch, possibilities include, e.g., detecting the rotation of theoperation unit 6 by a pawl and ratchet as in the embodiment inPatent Document 2, and detecting the rotation of theoperation unit 6 by a gas control valve as in the embodiment inPatent Document 8. - In Embodiment 1 described below, instead of the
operation unit 6 being supported on thebrake lever 4, a possible configuration is one in which theoperation unit 6 is supported on a member supported on thebracket 2 so as to be capable of swinging around an axis substantially parallel to theaxis 3, and theoperation unit 6 is supported on thebracket 2 so as to be capable of substantially rotating around theaxis 5. In this case, the configuration and arrangements are preferably designed so that theoperation unit 6 follows the swinging operation of thebrake lever 4, as in the embodiment ofPatent Document 3. - In
Embodiment 1 or 2 described below, extending thefin shape axis 3 makes it possible to easily operate theoperation unit bracket 2 is grasped. - In
FIGS. 1 through 3 , thebrake lever 4 has a rod shape extending downward, one end of which is supported on a shaft pin centered around anaxis 3 disposed in the front end of a hollow rod-shapedbracket 2. The other end of thebrake lever 4 in standby mode is swung backward, thereby causing one end of apush rod 10 to push on the internal cylinder of ahydraulic cylinder 11, the other end of thepush rod 10 being connected to a shaft pin centered around anaxis 9 parallel to theaxis 3 and disposed in the center of thebrake lever 4. The internal pressure increases in a brake hose, which is a linkingmember 12 connected at one end to thehydraulic cylinder 11, and a hydraulic brake caliper connected to the other end of the linkingmember 12 begins a braking action. - Typical operation positions include a position wherein the bases of the thumb and index finger of the right hand, the middle of the thumb, and the middle of the index finger come in contact with the
top surface 15, theleft side surface 23, and theright side surface 32 of thebracket 2, respectively; and a position where the oneend 14 of the handlebar 1 is grasped by the right hand. In either operation position, thefront surface 24 of thebrake lever 4 can be hooked by the index finger. - The rod-shaped
operation unit 6 extends along the back surface of thebrake lever 4 and is capable of rotating around theaxis 5 disposed so as to form an angle of 30 degrees or less with the longitudinal direction of the brake lever 4 (if the angle formed is 30 degrees or less, theaxis 5 can be said to extend sufficiently along the longitudinal direction of the brake lever 4). The rod-shapedoperation unit 6 comprises ashaft shape 29 centered around theaxis 5 at one end, a cylindrical shape centered around theaxis 5 at the other end, and fin shapes 25 to 27 extending along theaxis 5 to the rear, front, and left of theaxis 5, respectively. Thecylinder shape 30 at the other end is non-rotatably connected to an input shaft of the detection means 7 placed in the middle of thebrake lever 4, and is thus rotatably supported on thebrake lever 4. Theshaft shape 29 is rotatably supported on asupport part 28 at the other end of thebrake lever 4. - The detection means 7 is a switch comprising an urging member for returning the input shaft centered around the
axis 5 to a neutral position; and a mechanism which causes first and second terminals to close by rotating them about 5 degrees in a forward direction from the neutral position, and which causes second and third terminals to close by rotating them about 5 degrees in a reverse direction. The first, second, and third terminals are electrically connected to three cores of thesignal wire 13, and are electrically connected by thesignal wire 13 to a gearshift control board installed on the bicycle frame. The gearshift control board monitors which of the first and third terminals the second terminal closes with, and controls an actuator for the gear shifting action so that if one terminal closes, the gear shifts up, and if the other terminal closes, the gear shifts down. Theoperation unit 6 can only rotate about 10 degrees in the forward and reverse directions from the neutral position because the fin shapes 26 and 27 both come in contact with thebrake lever 4. - Though not shown in
FIGS. 1 through 3 , a bicycle brake operating device, being a mirror image of the first device, is fixed to the other end of the handlebar 1 and can be operated by the left hand. - In
FIGS. 4 through 6 , thebrake lever 4 has a rod shape extending downward, the middle of which is supported on a shaft pin centered around anaxis 3 disposed in the front end of a hollow rod-shapedbracket 2. The other end of thebrake lever 4 in standby mode is swung backward, thereby causing aninner wire 35 to be pulled out from an outer casing. One end of theinner wire 35 is connected to a shaft pin centered around anaxis 9 parallel to theaxis 3 and disposed in the center of thebrake lever 4. The outer casing is a linkingmember 12 interlocked at one end with thebracket 2. A wired brake caliper, to which the other end of the linkingmember 12 is interlocked and the other end of theinner wire 35 is connected, begins a braking action. - Typical operation positions include a position wherein the bases of the thumb and index finger of the right hand, the middle of the thumb, and the middle of the index finger come in contact with the
top surface 15, theleft side surface 23, and theright side surface 32 of thebracket 2, respectively; and a position where the oneend 14 of the handlebar 1 is grasped by the right hand. In either operation position, thefront surface 24 of thebrake lever 4 can be hooked by the index finger. - The rod-shaped
operation unit 6 extends along the back surface of thebrake lever 4 and is capable of rotating around theaxis 5 disposed so as to form an angle of 30 degrees or less with the longitudinal direction of thebrake lever 4. The rod-shapedoperational unit 6 comprises ashaft shape 29 centered around theaxis 5 at one end, acylindrical shape 30 centered around theaxis 5 at the other end, and afin shape 25 located behind theaxis 5 so as to extend along theaxis 5. Thecylinder shape 30 is non-rotatably connected to an input shaft of the detection means 7 placed in the middle of thebrake lever 4, and is thus rotatably supported on thebrake lever 4. Theshaft shape 29 is rotatably supported on asupport part 28 at the other end of thebrake lever 4. - A rod-shaped
operation unit 34 extends along the back surface of thebrake lever 4 and is capable of rotating around anaxis 33 disposed behind theaxis 5 so as to form an angle of 30 degrees or less with the longitudinal direction of thebrake lever 4. The rod-shapedoperation unit 34 comprises ashaft shape 36 centered around anaxis 33 at one end, acylindrical shape 40 centered around theaxis 33 at the other end, and fin shapes 37 and 38 located to the rear and left of theaxis 33, respectively. Thecylindrical shape 40 at the other end is non-rotatably connected to an input shaft of detection means 39 placed in the middle of thebrake lever 4, and is thus rotatably supported on thebrake lever 4. Theshaft shape 36 is rotatably supported on thesupport part 28 at the other end of thebrake lever 4. - The detection means 7 is a switch comprising an urging member for returning the input shaft centered around the
axis 5 to an initial position, and a mechanism whereby a rotation of approximately 5 degrees from the initial position causes first and second terminals to close. The detection means 39 is a switch comprising an urging member for returning the input shaft centered around theaxis 33 to a neutral position; and a mechanism whereby a rotation of about 5 degrees in a forward direction from the neutral position causes third and fourth terminals to close, and a rotation of about 5 degrees in a reverse direction causes fourth and fifth terminals to close. The first and third terminals are electrically connected to each other, the second and fourth terminals are electrically connected to each other; and the third, fourth, and fifth terminals are electrically connected to three cores of thesignal wire 13, and these terminals are electrically connected by thesignal wire 13 to a gearshift control board installed on the bicycle frame. The gearshift control board monitors which of the third and fifth terminals the fourth terminal closes with, and controls an actuator for the gear shifting action so that if one terminal closes, the gear shifts up, and if the other terminal closes, the gear shifts down. Theoperation unit 6 can only rotate about 10 degrees from the initial position because thefin shape 25 will come in contact with theoperation unit 34. Similarly, theoperation unit 34 can also only rotate about 10 degrees in the forward and backward directions from the neutral position because the fin shapes 37 and 38 will come in contact with theoperation unit 6 and thebrake lever 4. - Though not shown in
FIGS. 4 through 6 , a bicycle brake operating device, being a mirror image of the first device, is fixed to the other end of the handlebar 1 and can be operated by the left hand.
Claims (20)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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JP2007-185108 | 2007-07-14 | ||
JP2007185108 | 2007-07-14 | ||
JP2007267452A JP4135161B2 (en) | 2007-07-14 | 2007-10-15 | Bicycle brake operating device |
JP2007-267452 | 2007-10-15 | ||
PCT/JP2008/001848 WO2009011110A1 (en) | 2007-07-14 | 2008-07-10 | Bicycle brake operating device |
Publications (2)
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US20100199798A1 true US20100199798A1 (en) | 2010-08-12 |
US8646353B2 US8646353B2 (en) | 2014-02-11 |
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Application Number | Title | Priority Date | Filing Date |
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US12/668,663 Active 2030-03-08 US8646353B2 (en) | 2007-07-14 | 2008-07-10 | Bicycle brake operating device |
Country Status (4)
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US (1) | US8646353B2 (en) |
JP (1) | JP4135161B2 (en) |
DE (1) | DE112008001717B4 (en) |
WO (1) | WO2009011110A1 (en) |
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Also Published As
Publication number | Publication date |
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JP2008074402A (en) | 2008-04-03 |
DE112008001717T5 (en) | 2010-07-15 |
DE112008001717B4 (en) | 2013-09-05 |
JP4135161B2 (en) | 2008-08-20 |
US8646353B2 (en) | 2014-02-11 |
WO2009011110A1 (en) | 2009-01-22 |
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